24FC256T-E/OT

Memory IC Overview

The Microchip Technology 24FC256T-E/OT is a 32K x 8 (256-Kbit) Serial Electrically Erasable PROM (EEPROM). It operates across a broad voltage range of 1.7V to 5.5V and supports I2C compatible two-wire serial interface with a maximum clock frequency of 1 MHz at VCC ≥ 2.5V. The device features a 64-byte page write buffer, hardware write-protect capability, and extended temperature range from -40°C to +125°C.

Memory IC Feature Summary

• Supports high-speed 1 MHz I2C communication for efficient data transfer
• Includes a 64-byte page write buffer to optimize write operations
• Features hardware write-protect pin to secure memory array integrity

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications operating in extended temperature environments

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature rating (-40°C to +125°C) and 'OT' indicates the SOT-23-5 package configuration. Confirm RoHS compliance status and ensure the ordering code matches the required voltage and speed specifications for your design.

Memory IC Selection Notes

Select this component when an I2C EEPROM requires operation below 2.5V, as standard variants may not support the full 1.7V lower limit. Ensure the application utilizes the SOT-23-5 footprint and requires the extended industrial temperature grade for harsh environmental conditions.

Memory IC Part Context

This part belongs to the 24XX256 family of 256-Kbit I2C Serial EEPROMs. It shares architectural similarities with the 24AA256 and 24LC256 but offers distinct electrical characteristics, specifically supporting higher clock frequencies and lower supply voltages compared to other family members.

Memory IC Replacement Considerations

Direct replacements include the 24FC256T-I/OT for industrial temperature range or the 24FC256-E/OT in alternative packages like SOIC. Cross-family substitutes such as the 24LC256 require verification of voltage compatibility and clock speed limitations.